42-013-35514

PRODUCING Horizontal

WILHELM SMITH UNIT B

ATASCOSA County · District 2 · MARATHON OIL EF LLC · EAGLEVILLE (EAGLE FORD-2)

Permits

1

Max Depth

19,500 ft

First Permit

2017-08-29

Latest Activity

2017-08-29

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

2018-07-15

Shut-In

Plugged

P-5 Org Status: Active

Production Summary

Cum Oil

bbl

Cum Gas

mcf

First Production

2013-05

Last Production

2026-07

Lease Production

Production is reported at the lease level. View production data, decline curves, and history on the lease page.

Formation Tops (12) Elevation 300 ft (GR)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
QUEEN CITY 2,865 ft-2,565 ft
REKLAW 3,179 ft-2,879 ft
CARRIZO 3,840 ft-3,540 ft
WILCOX - DISPOSAL (Wilcox)5,215 ft-4,915 ft
NAVARRO - H2S (Navarro)8,346 ft-8,046 ft
OLMOS - DISPOSAL (Olmos)8,916 ft-8,616 ft
ANACACHO - H2S (Anacacho)10,417 ft-10,117 ft
ANACACHO - H2S (Anacacho)10,419 ft-10,119 ft
AUSTIN CHALK - H2S, DISPOSAL (Austin Chalk)10,607 ft-10,307 ft
AUSTIN CHALK - H2S, DISPOSAL (Austin Chalk)10,615 ft-10,315 ft
BARTOSH
ESCONDIDO - H2S, DISPOSAL (Escondido)

As reported by operators on W-2/G-1 completion filings (RRC wellbore records). Depths are measured depth; names appear as filed. Subsea = reported elevation − measured depth (negative = below sea level; vertical wellbores only). View filings & logs at RRC ↗

Offset Well Tops (nearest 8 wells with tops)

What nearby completed wells reported.

Cross-section
42-013-35515 WILHELM-SMITH UNIT B · MARATHON OIL EF LLC
0.0 mi
Queen City 2,865'Reklaw 3,179'Carrizo 3,840'Wilcox 5,215'Navarro 8,346'Olmos 8,916'Anacacho 10,419'Austin Chalk 10,615'Escondido Bartosh
42-013-35516 WILHELM-SMITH UNIT B · MARATHON OIL EF LLC
0.0 mi
Queen City 2,865'Reklaw 3,179'Bartosh 3,462'Carrizo 3,840'Wilcox 5,215'Navarro 8,346'Olmos 8,916'Anacacho 10,386'Anacacho 10,419'Austin Chalk 10,615'Austin Chalk 10,618'Escondido +1 more
42-013-35599 W. SMITH B-A-MCS PSA · MARATHON OIL EF LLC
0.3 mi
Queen City 2,815'Reklaw 3,130'Bartosh 3,412'Carrizo 3,790'Wilcox 6,344'Navarro 8,296'Olmos 8,866'Anacacho 10,343'Austin Chalk 10,541'Escondido Navarro
42-013-35505 HENKE-WILHELM UNIT A · MARATHON OIL EF LLC
0.3 mi
Queen City 2,815'Reklaw 3,130'Bartosh 3,412'Carrizo 3,790'Wilcox 6,344'Navarro 8,296'Olmos 8,866'Anacacho 10,326'Austin Chalk 10,533'Escondido
42-013-35506 HENKE-WILHELM UNIT A · MARATHON OIL EF LLC
0.3 mi
Queen City 2,815'Reklaw 3,130'Bartosh 3,412'Carrizo 3,790'Wilcox 6,344'Navarro 8,296'Olmos 8,866'Anacacho 10,325'Austin Chalk 10,530'Escondido
42-013-35507 HENKE-WILHELM UNIT A · MARATHON OIL EF LLC
0.3 mi
Queen City 2,815'Reklaw 3,130'Bartosh 3,412'Carrizo 3,790'Wilcox 6,344'Navarro 8,296'Olmos 8,866'Anacacho 10,323'Austin Chalk 10,524'Escondido
42-013-35713 WILHELM-SMITH UNIT B · MARATHON OIL EF LLC
0.6 mi
Queen City 2,901'Reklaw 3,216'Bartosh 3,498'Carrizo 3,876'Wilcox 5,252'Navarro 8,382'Olmos 8,952'Anacacho 10,411'Austin Chalk 10,611'Escondido
42-013-35709 TOM-SMITH UNIT A · MARATHON OIL EF LLC
0.6 mi
Queen City 2,901'Reklaw 3,216'Bartosh 3,498'Carrizo 3,876'Wilcox 5,252'Navarro 8,382'Olmos 8,952'Anacacho 10,430'Austin Chalk 10,628'Eagle Ford 10,781'Escondido

Nearest wells within 10 mi (surface locations). Click wells to select them, then open the cross-section to compare tops side by side (max 6 wells per section, including this one).

Perforations (1)

IntervalType
10,979–18,311 ftPerforated

Casing (2)

SizeSet DepthCement
9.625"5,291 ft1,415 sx
5.5"18,418 ft3,271 sx

Permit History (1)

Applications (1)

#830075 A MARATHON OIL EF LLC
received 2017-08-18

Records & Logs

2 completion filings on record · 2 with log images at RRC.

W-2/G-1 2018-08-08 log on file
W-2/G-1 2018-06-15 log on file

Completion packets open directly (post-2011 filings include attached logs). Log images can't be deep-linked — clicking copies the API for you to paste.

Lat 28.729123
Lon -98.215958

Well Details

Well Number
3H
Max Depth
19,500 ft
Drill Type
Horizontal
County
ATASCOSA
District
2
Completed
2018-07-15

Operator

Location
HOUSTON
P-5 Status
Active (filed 2025-09-26)
Cum Oil (all leases)
409,189,156 bbl
Cum Gas (all leases)
1,029,735,602 mcf
Activities
CSGD/G, CSGD/P, G/PUR, GTHS/C, GTHS/G, GTHS/O, OPRS/G, OPRS/O
Total Permits
3,173